Ontario close

Marathon Calendar Ontario 2025-2026

Header image

Explore the best marathons in Ontario for 2025-2026! Our updated list features 16 exciting races across the region. Find your next race in Ontario below and join the running community at these great events!

October 2025
Oct
5
Sunday

Muskoka Marathon

5 km 10 km Half Marathon Marathon
Oct
5
Sunday

The County Marathon

5 km Half Marathon Marathon
Oct
12
Sunday

Fall Colours Run

3 km 5 km ... Half Marathon Marathon
Oct
18-19
Sa - Su

Toronto Waterfront Marathon

5 km Half Marathon Marathon
Oct
18-19
Sa - Su

Toronto Waterfront Marathon Long Run

5 km Half Marathon Marathon
Oct
26
Sunday

Niagara Falls Marathon

5 km 10 km Half Marathon Marathon
November 2025
Nov
1
Saturday

Hamilton Marathon Road2Hope

5 km 10 km Half Marathon Marathon
February 2026
Feb
15
Sunday

Embrace Winter Run

3 km 5 km ... Half Marathon Marathon
April 2026
Apr
26
Sunday

Beneva Mississauga Marathon

5 km 10 km Marathon
May 2026
May
3
Sunday

Spring Fling Marathon

5 km 10 km Half Marathon Marathon
May
3
Sunday

Toronto Marathon

5 km 10 km Half Marathon Marathon
June 2026
Jun
20
Saturday

Community Strong Race

5 km 10 km Half Marathon Marathon
July 2026
Jul
4
Saturday

The Limberlost Challenge

Trail Run 7 km 14 km ... Marathon 56 km
Jul
18-19
Sa - Su

Xterra Conquer the Crater

Trail Run 3 km 5 km ... Half Marathon Marathon
August 2026
Aug
8
Saturday

Falling Water Trail Marathon

Trail Run Half Marathon Marathon
Aug
9
Sunday

The ENDURrun

Trail Run 10 km 15 km ... 30 km Marathon
Articles
Top 10 Marathons in the Netherlands — The Ultimate Dutch Marathon Bucket List: 10 Unmissable Races
The Beauty of the Easy Run — Why slowing down might be the smartest thing you do for your running
Mizuno Wave Rider 28: Elevating the Legacy of a Running Icon
Garmin Forerunner Review: Garmin Forerunner Series